Error code p0685 ecm/pcm power relay comm open
as you can gather from the title, i have an error!
it reads P0685 ECM/PCM power relay comm open.
the car has stuttered a couple of times, lit up the glow plug light and the VDC, and tried to cut out, and then eventually gave me usual Dealer or Die instruction on the computer!
i'm pretty sure this will turn out to be a bad connection, knackered relay, that sort of thing, but does the code point towards one device in particular, and where please?
thanks in advance
Last edited by PETR0LHEAD; 27-10-10 at 08:22.